PCB Relay, Solid State Relay, Power Relay manufacturer / supplier in China, offering NNC Dust-proof Limit Switch ESMZ-15 Waterproof Micro Switch 15A with High Precision, NNC Limit Switch ESMZ Series Waterproof Micro Switch 15A with High Precision, Waterproof Limit Switch ESMZ Series Micro Switch with Spring Plunger and so on.